Can you please provide more details of the issue you are having? Are you reporting locked backgrounds in Black Ops II? Which backgrounds in a particular are locked? Would it be possible to link us to an image of what you are referring to?
Sorry for late answer, it's in Ghost, the special backgroud which should be unlocked when your are at max prestige level in BO2.
It's still locked grrrrrr
If you haven't already done so, BloodMob gave a helpful tip. Additionally, please try playing a few matches in Black Ops II. Let us know if you are still unable to unlock the items.
U have to sync all your accounts to your Ghost profile, that's what I did to show all mines and I achieved more special backgrounds